Metal Roofing Over Skip Sheathing

Underlying sheathing is being replaced or added over skip sheathing a nailing inspection is minimum 3 in 12 for lapped nonsoldered non sealed metal roof panels.

Metal roofing over skip sheathing.

My shingles cost about 3113 and osb is 1080. When you think of a modern plywood roof deck you re not imagining gaps between the sheets of plywood. Felt and ice and water is 415 so that totals 4608. Make sure there s a 1 inch overlap the edge of the roof by one inch then secure it by drilling 1 and 1 2 inch galvanized metal screws through the panel in 12 inch to 16 inch intervals.

In most cases 1 6 sheathing at 24 in. Metal roofing is about 135 sq so that makes it around 4700 plus a few hundred for the purlins. Osb or plywood over skip sheathing makes for a much stiffer roof deck resists problems with expansion better and obviously doesn t require all the hassle of removing it. The entire roof deck is relatively uniform where you can step on any part of it without slipping through spaces.

Skip sheeting or spaced sheathing is just as it sounds. Concrete tiles depending on the type may be installed on open sheathing spaced in the 12 in. Sheathing with gaps between. Overlap the next panel straight above the first by 12 inches and secure it the same way you secured the first.

Prior to the installation of an additional layer of roofing material over an existing layer s. Fasteners metal shavings care should be taken to avoid stepping in the retrieve here. You ll want to use both longer sheathing nails and longer roofing nails. After you strip the roof do spot repairs to the existing sheathing where needed then go right over it.

Preformed metal roofing is lightweight and runs continuously in the direction of the rafters. Shingle installation guide decra roofing systems re roof tear off skip spaced sheathing or over asphalt shingle. Where code allows re roofing over 2 layers of asphalt shingles follow the local code.